Project ID:
7100000009
Accepted:
Type:
Layout:
Question:
Match the given geometric sequences $(a_n)_{n=1}^{\infty}$ with their sought terms $(a_n)$, common ratios $(q)$, or partial sums $(s_n)$.
Question 1:
$a_n=(-2)^n;\ a_1=?$
Answer 1:
$-2$
Question 2:
$a_n=(\frac12)^n;\ q=?$
Answer 2:
$\frac12$
Question 3:
$a_n=2\cdot(\frac12)^n;\ a_1=?$
Answer 3:
$1$
Question 4:
$a_n=2\cdot(-1)^n;\ a_{10}=?$
Answer 4:
$2$
Question 5:
$a_1=-8;\ a_2=4;\ q=?$
Answer 5:
$-\frac12$
Question 6:
$a_1=-0.01;\ a_2=0.1;\ a_3=?$
Answer 6:
$-1$
Question 7:
$a_1=1;\ q=1;\ s_{10}=?$
Answer 7:
$10$
Question 8:
$a_1=-10;\ q=0;\ s_{10}=?$
Answer 8:
$-10$
Question 9:
$a_n=(-1)^n;\ s_{10}=?$
Answer 9:
$0$